Figure
5.20.2RTC Alarm (ALARM)
Pin |
| Name |
| Direction |
| Function |
|
|
|
|
|
|
|
50 |
| ALARM |
| Output |
| RTC Alarm |
The Alarm output is logic output from the module which is supplied from the RTC circuitry block. This block is in turn supplied either from the main supply of the module or from a backup battery if the main supply is not available.
5.20.2.1ALARM Output from the Module
The ALARM time is set by the use of an
Since the VRTC interface is operable down to 1.1V, transistor circuitry must be used on the host side. It is recommended that integrators use an FET to minimize current consumption. If a suitable FET, operating at the low voltage necessary, cannot be found then
LZT 123 1834 | 72 |